A cool Phil Collins style drum roll, coming to a mousepad near you!
This selfmade drum trigger pad I made in about 15 minutes for testing Alesis D4 drum module. It consist of synthetic leather (better use mousepad) glued on one side of tin sheet and piezo glued on the other. All this is glued on the spnge for absorving vibnration. For testing purposes it s easiest to solder cable with connector directly on the piezo. – Link